This guy has done his homework. In a few languages! The book is less about buddhist "philosophy" as a whole, as much as about epistimology, the shared view of which any two buddhist debators would need as a starting point. The various trends that developed to "cope" with Dharmakirti's somewhat slippery model is what forms much of the book. The western idea of "universal" is the equivalent to the concept Dreyfus puts under the microscope for us. I found this book both challenging and rewarding, though it did take me quite a while to read~!
This books is an excellent treatise on Buddhist philosophy, in particular I found it provided a description of the differences in interpretation between different schools of thought as they evolved over time. It also points out many similiarities and differences between the Eastern and Western philosophical traditions. By focusing on a few critical philosophical topics, such as realism, it provides a more accessible detail view of later Buddhist philosophy than many other works. Clear and engaging writing.